<SEC-DOCUMENT>0001209191-12-058658.txt : 20121219
<SEC-HEADER>0001209191-12-058658.hdr.sgml : 20121219
<ACCEPTANCE-DATETIME>20121219173835
ACCESSION NUMBER:		0001209191-12-058658
CONFORMED SUBMISSION TYPE:	3
PUBLIC DOCUMENT COUNT:		2
CONFORMED PERIOD OF REPORT:	20121212
FILED AS OF DATE:		20121219
DATE AS OF CHANGE:		20121219

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			MOOG MATTHEW
		CENTRAL INDEX KEY:			0001254092

	FILING VALUES:
		FORM TYPE:		3
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	000-24389
		FILM NUMBER:		121275356

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			VASCO DATA SECURITY INTERNATIONAL INC
		CENTRAL INDEX KEY:			0001044777
		STANDARD INDUSTRIAL CLASSIFICATION:	SERVICES-COMPUTER INTEGRATED SYSTEMS DESIGN [7373]
		IRS NUMBER:				364169320
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1231

	BUSINESS ADDRESS:	
		STREET 1:		1901 SOUTH MYERS ROAD
		STREET 2:		SUITE 210
		CITY:			OAKBROOK TERRACE
		STATE:			IL
		ZIP:			60181
		BUSINESS PHONE:		6309328844

	MAIL ADDRESS:	
		STREET 1:		1919 S HIGHLAND AVE
		STREET 2:		STE 118 C
		CITY:			LOMBARD
		STATE:			IL
		ZIP:			60148
</SEC-HEADER>
<DOCUMENT>
<TYPE>3
<SEQUENCE>1
<FILENAME>c30764_3x1.xml
<DESCRIPTION>MAIN DOCUMENT DESCRIPTION
<TEXT>
<XML>
<?xml version="1.0"?>
<ownershipDocument>

    <schemaVersion>X0206</schemaVersion>

    <documentType>3</documentType>

    <periodOfReport>2012-12-12</periodOfReport>

    <noSecuritiesOwned>1</noSecuritiesOwned>

    <issuer>
        <issuerCik>0001044777</issuerCik>
        <issuerName>VASCO DATA SECURITY INTERNATIONAL INC</issuerName>
        <issuerTradingSymbol>VDSI</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001254092</rptOwnerCik>
            <rptOwnerName>MOOG MATTHEW</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>1901 S. MEYERS ROAD</rptOwnerStreet1>
            <rptOwnerStreet2>SUITE 210</rptOwnerStreet2>
            <rptOwnerCity>OAKBROOK TERRACE</rptOwnerCity>
            <rptOwnerState>IL</rptOwnerState>
            <rptOwnerZipCode>60181</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>1</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>0</isTenPercentOwner>
            <isOther>0</isOther>
        </reportingOwnerRelationship>
    </reportingOwner>

    <nonDerivativeTable></nonDerivativeTable>

    <derivativeTable></derivativeTable>

    <remarks>Exhibit List:            Exhibit 24:  Limited Power of Attorney</remarks>

    <ownerSignature>
        <signatureName>/s/ Clifford K. Bown, Attorney-in-Fact</signatureName>
        <signatureDate>2012-12-19</signatureDate>
    </ownerSignature>
</ownershipDocument>
</XML>
</TEXT>
</DOCUMENT>
<DOCUMENT>
<TYPE>EX-24
<SEQUENCE>2
<FILENAME>c30764_24.htm
<DESCRIPTION>POWER OF ATTORNEY
<TEXT>
<html>
<head><title>Power of Attorney</title></head>
<body><DIV
style="width: 7.5in; font-family: 'Times New Roman',Times,serif; margin-left: 0.25in">

<P style="font-size: 10pt" align="justify"><B>EXHIBIT 24</B>

<P style="font-size: 10pt" align="center">LIMITED POWER OF ATTORNEY

<P style="font-size: 10pt" align="center">FOR

<P style="font-size: 10pt" align="center">VASCO DATA SECURITY INTERNATIONAL,
INC.

<P style="font-size: 10pt" align="center">SECTION 16(a) FILINGS

<P style="text-indent: 3%; font-size: 10pt" align="justify">Know all by these
presents, that the undersigned hereby constitutes and appoints each of VASCO
Data Security International, Inc. and Clifford K. Bown, signing singly, the
undersigned&#8217;s true and lawful attorney-in-fact to:

<P style="text-indent: 3%; font-size: 10pt" align="justify">(1)&nbsp;Execute
for and on behalf of the undersigned, in the undersigned&#8217;s capacity as an
officer, director and/or stockholder of VASCO Data Security International, Inc.
(the &#8220;Company&#8221;), Forms 3, 4, and 5 and amendments thereto in
accordance with Section 16(a) of the Securities Exchange Act of 1934 and the
rules thereunder;

<P style="text-indent: 3%; font-size: 10pt" align="justify">(2)&nbsp;Do and
perform any and all acts for and on behalf of the undersigned which may be
necessary or desirable to complete and execute any such Form&nbsp;3, 4, or 5 or
amendment thereto and timely file such form with the United States Securities
and Exchange Commission (the &#8220;SEC&#8221;) and any stock exchange or
similar authority; and

<P style="text-indent: 3%; font-size: 10pt" align="justify">(3)&nbsp;Take any
other action of any type whatsoever which, in the opinion of such
attorney-in-fact, may be necessary or desirable in connection with the
foregoing authority, it being understood that the documents executed by such
attorney-in-fact on behalf of the undersigned pursuant to this Power of
Attorney shall be in such form and shall contain such terms and conditions as
such attorney-in-fact may approve.

<P style="text-indent: 3%; font-size: 10pt" align="justify">The undersigned
hereby grants to each such attorney-in-fact full power and authority to do and
perform any and every act and thing whatsoever requisite, necessary, or proper
to be done in the exercise of any of the rights and powers herein granted, as
fully to all intents and purposes as the undersigned might or could do if
personally present, with full power of substitution or revocation, hereby
ratifying and confirming all that such attorney-in-fact, or such
attorney-in-fact&#8217;s substitute or substitutes, shall lawfully do or cause
to be done by virtue of this Power of Attorney and the rights and powers herein
granted. The undersigned acknowledges that the foregoing attorneys-in-fact, in
serving in such capacity at the request of the undersigned, are not assuming,
nor is the Company assuming, any of the undersigned&#8217;s responsibilities to
comply with Section&nbsp;16 of the Securities Exchange Act of 1934.

<P style="text-indent: 3%; font-size: 10pt" align="center">&nbsp;

<P style="display: none; font-size: 10pt" align="center">1
</DIV>

<!-- PAGEBREAK -->

<DIV
style="width: 7.5in; font-family: 'Times New Roman',Times,serif; margin-left: 0.25in">

<P style="text-indent: 3%; font-size: 10pt" align="justify">This Power of
Attorney shall remain in full force and effect until the undersigned is no
longer required to file Forms 3, 4, and 5 with respect to the
undersigned&#8217;s holdings of and transaction in securities of the Company,
unless earlier revoked by the undersigned in a signed writing delivered to the
foregoing attorneys-in-fact. This Power of Attorney may be filed with the SEC
as a confirming statement of the authority granted herein.

<P style="text-indent: 3%; font-size: 10pt" align="justify">IN WITNESS WHEREOF,
the undersigned has caused this Power of Attorney to be executed as of this
17th day of December, 2012.

<P style="margin-left: 50%; font-size: 10pt" align="justify"><U>/s/ Matthew
Moog</U><BR>
Matthew Moog

<P style="font-size: 10pt" align="center">&nbsp;

<P style="display: none; font-size: 10pt" align="center">2
</DIV>

</body>
</html>
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
